Single-player games like Overvoid
Below are 8 single-player Steam games similar to Overvoid, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Overvoid page.
Ranked picks
- 1

BirdBots
Single-player alternative to Overvoid — playable solo, no multiplayer required. Shares Action with Overvoid.
Master a unique skill-based flight system in a post-apocalyptic world. Play the story, survive procedurally generated tunnels, or compete with up to 6 players in multiplayer races and Last BirdBot Standing battles.
- 2

B.L.U.E. NOVA
Single-player alternative to Overvoid — playable solo, no multiplayer required. Shares Action with Overvoid.
B.L.U.E. NOVA is an online co-op PvE third-person shooter that grows from solo play into battles with up to 30 players. Choose your hero, connect through “R.I.N.G.”, unleash “Infinite Barrage,” and join forces to destroy the final “Master Tower”!
- 3

Asteros
Single-player alternative to Overvoid — playable solo, no multiplayer required. Shares Action with Overvoid.
Asteros is a Sci-Fi third person action rogue-like where intense gunfights and complex combat await. Sent to eliminate an unknown threat in a research facility on the titular planet, you'll encounter hostile forces and uncover hidden dangers as you fight to secure humanity's future.
- 4

Quantum Fight : Aero 2299
Single-player alternative to Overvoid — playable solo, no multiplayer required. Shares Action and Indie with Overvoid.
Become the champion of the ultimate galactic show in this intense blend of Tower Defense and tactical assault. Manage resources in real-time, deploy your AI squads, and annihilate your rivals before billions of spectators in Quantum Fight: Aero 2299.
- 5

Star-Coat
Single-player alternative to Overvoid — playable solo, no multiplayer required. Shares Action with Overvoid.
Star-Coat is a third person shooter where you dive into procedurally generated maps to fight corrupted enemies and the bosses that command them. Outfit your pilot and your COAT, a fearsome walker, with a variety of weapons and armor to help you defeat evil in the universe.
- 6

Spheromania
Single-player alternative to Overvoid — playable solo, no multiplayer required. Shares Action and Indie with Overvoid.
Bounce, blast, and outlast in Spheromania. A fast-paced arena shooter where drones duel with blasters, mines, and mid-air hops. Manage your energy, dodge the shrinking arena, and be the last sphere hovering. Solo mode or online multiplayer.
- 7

TheFlagship
Single-player alternative to Overvoid — playable solo, no multiplayer required. Shares Action with Overvoid.
"The Flagship" is a singleplayer third-person space warship roguelike game. From destroyers to battleships, choose your vessel and equip it to face node-based roguelike challenges, each adventure is a different experience. Your ship, equipment, skill level and roguelike ability build will be tested.
- 8

Other World Strike: Helicopter Rescue
Single-player alternative to Overvoid — playable solo, no multiplayer required. Shares Action with Overvoid.
A third-person helicopter action shooter featuring realistic physics-based flight enhanced by alien technology. Extract stranded soldiers before hostile alien forces capture them across open maps set in three distinct biomes, with optional first-person gameplay and four selectable camera views.